2019-07-28 10:31:56 +08:00
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/*
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2014-11-19 00:25:21 +08:00
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Copyright (C) 1999, 2000 Igor Khasilev, igor@paco.net
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Copyright (C) 2000 Andrey Igoshin, ai@vsu.ru
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*-
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* Copyright (c) 1998 Alex Nash
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef ACL_PTHREAD_RWLOCK_H
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#define ACL_PTHREAD_RWLOCK_H
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2017-06-02 14:47:24 +08:00
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#include "../stdlib/acl_define.h"
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#include "../thread/acl_pthread.h"
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2015-06-29 17:33:11 +08:00
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#if defined(_WIN32) || defined(_WIN64)
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2014-11-19 00:25:21 +08:00
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# define ACL_HAVE_NO_RWLOCK
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#endif
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#ifdef ACL_HAVE_NO_RWLOCK
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#if !defined(ACL_PTHREAD_PROCESS_PRIVATE)
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#define ACL_PTHREAD_PROCESS_PRIVATE 0
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#endif
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#if !defined(ACL_PTHREAD_PROCESS_SHARED)
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#define ACL_PTHREAD_PROCESS_SHARED 1
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#endif
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#if !defined(ACL_PTHREAD_RWLOCK_INITIALIZER)
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#define ACL_PTHREAD_RWLOCK_INITIALIZER NULL
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struct acl_pthread_rwlock {
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acl_pthread_mutex_t lock; /* monitor lock acl_pthread_mutex_t */
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int state; /* 0 = idle >0 = # of readers -1 = writer */
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acl_pthread_cond_t read_signal;
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acl_pthread_cond_t write_signal;
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int blocked_writers;
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};
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struct acl_pthread_rwlockattr {
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int pshared;
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};
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typedef struct acl_pthread_rwlock *acl_pthread_rwlock_t;
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typedef struct acl_pthread_rwlockattr *acl_pthread_rwlockattr_t;
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#if defined(__cplusplus)
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extern "C" {
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#endif
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ACL_API int acl_pthread_rwlock_destroy(acl_pthread_rwlock_t *);
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ACL_API int acl_pthread_rwlock_init(acl_pthread_rwlock_t *,
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const acl_pthread_rwlockattr_t *);
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ACL_API int acl_pthread_rwlock_rdlock(acl_pthread_rwlock_t *);
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ACL_API int acl_pthread_rwlock_tryrdlock(acl_pthread_rwlock_t *);
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ACL_API int acl_pthread_rwlock_trywrlock(acl_pthread_rwlock_t *);
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ACL_API int acl_pthread_rwlock_unlock(acl_pthread_rwlock_t *);
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ACL_API int acl_pthread_rwlock_wrlock(acl_pthread_rwlock_t *);
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ACL_API int acl_pthread_rwlockattr_init(acl_pthread_rwlockattr_t *);
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ACL_API int acl_pthread_rwlockattr_getpshared(const acl_pthread_rwlockattr_t *, int *);
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ACL_API int acl_pthread_rwlockattr_setpshared(acl_pthread_rwlockattr_t *, int);
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ACL_API int acl_pthread_rwlockattr_destroy(acl_pthread_rwlockattr_t *);
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#if defined(__cplusplus)
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}
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#endif
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#endif
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#endif /* ACL_HAVE_NO_RWLOCK */
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#endif /* __ACl_THREAD_RWLOCK__ */
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